Epiphyllum thomasianum is an epiphytic species of cactus native to Colombia, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua and Panamá.

[7] The vegetative morphology closely resembles Epiphyllum oxypetalum.

The flowers differ due to their striking golden stamina.

Currently two subspecies are recognised: Epiphyllum thomasianum subsp.

costaricense and Epiphyllum thomasianum subsp.